Coffee-roaster.



A. E.' TAVA.

COFFEE ROASTER.

APPLIoATIoN FILED JAN. 7, 1910.

955,616. `Patented Apr. 19,1910.

ALBANO E. TAVA, OF NEW YORK, N. Y.

COFFEE-ROASTER.

Application led January 7 To all whom it 'may concern:

Be it known that I, ALBANO E. TAVA, a subject of the Emperor ofAustria-Hungary, residing at New York city, in the borough of Manhattan,county and State of New York, have invented certain new and usefulImprovements in Coee-Roasters, of which the following is a clear, full,and exact description.

The object of this invention is to provide an improved portable coffeeroaster for use with the ordinary stove or range, to enable a better,more uniform and thorough roasting of each and every berry that is to beroasted.

One object of the invention is to provide means whereby the coffee whichis being directly acted upon by the heat is brought into close andintimate relation to the source of heat, and that the coffee will becontinuously stirred and uniformly changed in its position.

A further object is to provide an improved stirring or mixing blade orpaddle, which comes into Contact with and uniformly moves the berries inthe roasting vessel, produces a continuous even motion to the same,whereby substantially the same quantities of berries will be moved ateach point of the bottom of the receptacle, no matter how far theirradial position is from the center of the blade.

In carrying out my invention, various details of construction andarrangement of parts may be adopted. I have however, shown my preferredform of roaster in this application.

The scope of my invention will be pointed out in the claims.

In the accompanying` drawings, Figure 1 is a sectional central sideelevation of my improved coffee roaster. Fig. 2 is a plan view of Fig. lwith a part of the handles broken away. Fig. 3 is a perspective vie-w ofmy improved stirrer.

In carrying out my invention, I make use of a vessel 2 having slopingsides adapted to permit the roaster to be inserted down below the levelof the ordinary cook stove top 1 through one of the removable plateholes in the same, so that the coffee in contact with the bottom of thereceptacle and surrounding the paddle or mixer can be at all timesmaintained at an even heat within Specification of Letters Patent.

Patented Apr. 19, 1915.

, 1910. Serial No. 536,827.

the stove. To the top of the vessel 2 there is permanently secured acover' 3 provided with a handle 10 riveted thereto, for the purpose ofremoving and handling the roaster as a whole. In a foot-step bearing 14I mount a spindle 9 having the crankl handle preferably of the shapeshown in Fig. l. The crank handle has its second bearing in the cover 3.To insure a better bearing surface for the spindle 9 I rivet a secondplate 5 to the cover 3, through which the spindle projects, and I useone edge of this reinforcing plate 5 to provide a hinge 6 for a closingplate 4L for an aperture shown in dotted lines Fig. 2 through which theberries are inserted and ejected. A latch 7 of ordinary constructionserves to hold the cover plate 4L tightly in place so as to keep thearoma within the receptacle.

The paddle or blade 8 is imperforate and is provided with a centralsection of a given height with two side wings 11 and 12 extendingtherefrom of less height than the central part, and is so shaped as toconform substantially with the contour of the bottom and the lowercorners of the vessel, while the sides of the stirrer are inclined tomeet with the upper part of the paddle at the point of greatest height.

It will be obvious that the paddle moves with greater rapidity at itsfree or outer ends where there is less surface to the same, and thatconsequently the berries, while moved more rapidly at the outer end,will be moved in lesser quantity than they are moved near the axis ofthe spindle, but that at the axis greater quantities will be continuallymoved and caused to flow over the top of the blade. The reversely turnedends 11 and 12 aid in causing the berries to flow over the same. I amthus enabled to secure a substantially even roasting of all the berriesin the kettle.

I am aware that heretofore it has been proposed to form coffee roastersof the same general construction as the invention herein shown, and I donot claim such general construction. What is essential to my inventionhowever, is that the blade be reversely turned at its ends, fit thebottom and the corners of the vessel, and slope gradually to near theaxis of the same, whereby substantially the same quantity of berrieswill be displaced at the axis as is displaced at the ends ot the blades,thus prevent-ing burning of the berries at the center and theunder-roasting thereof at the ends.

I claiin as inv invention:

l. The herein described coffee roaster, comprising a vessel havinginclined sides, an iinperforate stirring paddle therein fitting thecontour of the bottoni and corners of the vessel, having reverselyturned end sections, a central section ot' greater height, inclinedsides meeting the central section at a distance troni the center, theinclination being` of such a pitch that substantially the saine quantityof berries will be nioved throughout the entire length of the paddleboth near the center, and at the ends, a spindle secured to the centeret said blade, a cover for the vessel, a footstep bearing in thereceptacle and a bearing in the cover for the spindle, and a crank arn'itor manual rotation of the spindle.

Q'. rthe herein described coffee roaster,

comprising a vessel having an imperforate stirring paddle therein{itt-ing the contour of the bottoni and corners ot the vessel, havingreversely turned end sections, a central section ot greater height,inclined sides meeting the central section at a distance from thecenter, the inclination being ot' such a pitch that substantially thesaine quantity ot berries will be inoved throughout the entire length otthe paddle both near the center, and at the ends, a spindle secured tothe center ot sa`d blade, a cover for the vessel, a ootstep bearing inthe receptacle and a bearing in the cover for the spindle, and a crankarin for manual. rotation of the spindle.

Signed at New `forli city, N. Y., this 30th day of December 1909.

ALBAN() E. TV.

lVitnesses Jenn J. Fnnsoni, Josnrii M. Toiuz'rsr.

